<template>
  <div class="goodsinfo-container">
    <!-- 购物车小球的绘制 -->
    <transition @before-enter="beforeEnter" @enter="enter" @after-enter="afterEnter">
      <div class="ball" v-show="ballFlag" ref="ball"></div>
    </transition>

    <!-- 商品轮播图区域 -->
    <div class="mui-card">
      <div class="mui-card-content">
        <div class="mui-card-content-inner">
          <swiper :lunbotuList="lunbotu" :isfull="false"></swiper>
        </div>
      </div>
    </div>
    <!-- 商品购买区域 -->
    <div class="mui-card">
      <div class="mui-card-header">商品的名称</div>
      <div class="mui-card-content">
        <div class="mui-card-content-inner">
          <p class="price">
            市场价：
            <del>￥2399</del>&nbsp;&nbsp;销售价：
            <span class="now_price">￥2199</span>
          </p>
          <div class="mui-numbox-div">购买数量：
            <numbox @getcount="getSelectedCount" :max="goodsinfo.stock_quantity"></numbox>
          </div>
          <p>
            <mt-button type="primary" size="small">立即购买</mt-button>
            <mt-button type="danger" size="small" @click="addToShopCar">加入购物车</mt-button>
          </p>
        </div>
      </div>
    </div>
    <!-- 商品参数区域 -->
    <div class="mui-card">
      <div class="mui-card-header">商品参数</div>
      <div class="mui-card-content">
        <div class="mui-card-content-inner">
          <p>商品货号：{{ goodsinfo.goods_no }}</p>
          <p>库存情况：{{ goodsinfo.stock_quantity}}件</p>
          <p>上架时间：{{ goodsinfo.add_time | dateFormat }}</p>
        </div>
      </div>
      <div class="mui-card-footer">
        <mt-button type="primary" size="large" plain @click="goDesc(id)">图文介绍</mt-button>
        <mt-button type="danger" size="large" plain @click="goComment(id)">商品评论</mt-button>
      </div>
    </div>
  </div>
</template>
<script>
import numbox from "../subcomponents/goodinfo_numbox.vue";
import swiper from "../subcomponents/Swiper.vue";
export default {
  data() {
    return {
      id: this.$route.params.id, //获取路由传过来的id，商品id
      lunbotu: [], //轮播图数组
      goodsinfo: {}, //商品详情中参数区数据
      ballFlag: false, //控制小球的隐藏和显示的标识符
      selectedCount: 1 //商品选中的数量
    };
  },
  created() {
    this.getlunbotu();
    this.getGoodsInfo();
  },
  methods: {
    getlunbotu() {
      //获取轮播图
      this.$http.get("getphoneimages/" + this.id).then(result => {
        console.log(result.body);
        if (result.body.status === 0) {
          result.body.data.forEach(item => {
            item.img = item.src;
          });
          this.lunbotu = result.body.data;
          console.log(this.lunbotu);
        }
      });
    },
    getGoodsInfo() {
      //获取商品详情中参数区的数据
      this.$http.get("getinfo/" + this.id).then(result => {
        console.log(result.body);
        if (result.body.status === 0) {
          this.goodsinfo = result.body.data[0];
        }
      });
    },
    goDesc(id) {
      //点击跳转到进入图文介绍页面
      this.$router.push({ name: "goodsdesc", params: { id } });
    },
    goComment(id) {
      //点击跳转到评论界面
      this.$router.push({ name: "goodscomment", params: { id } });
    },
    // 三个半场动画，绘制小球
    beforeEnter(el) {
      el.style.transform = "translate(0,0)";
    },
    enter(el, done) {
      el.offsetWidth;
      //小球的起始位置
      const ballPosition = this.$refs.ball.getBoundingClientRect();
      //徽标的位置
      const badgePosition = document
        .getElementById("badge")
        .getBoundingClientRect();
      // top和left移动的位置
      const xDist = badgePosition.left - ballPosition.left;
      const yDist = badgePosition.top - ballPosition.top;
      el.style.transform = `translate(${xDist}px,${yDist}px)`;
      el.style.transition = "all 0.5s cubic-bezier(.4,-0.3,1,.68)";
      done();
    },
    afterEnter(el) {
      this.ballFlag = !this.ballFlag;
    },
    addToShopCar() {
      //加入购物车
      this.ballFlag = !this.ballFlag;
      //拼接一个商品对象，保存到store中
      var goodsinfo = {
        id: this.id,
        count: this.selectedCount,
        price:this.goodsinfo.sell_price,
        selected:true
      };
      this.$store.commit("addToCar",goodsinfo);
    },
    getSelectedCount(count) {
      //定义一个方法，让子组件给父组件传值
      this.selectedCount = count;
      console.log("父组件拿到的数量值为：" + this.selectedCount);
    }
  },
  components: {
    swiper,
    numbox
  }
};
</script>
<style lang="scss" scoped>
.goodsinfo-container {
  background-color: #eee;
  overflow: hidden;
  .now_price {
    color: red;
    font-size: 16px;
    font-weight: bold;
  }
  .mui-numbox-div {
    margin-bottom: 7px;
    //   overflow: hidden;
  }
  .mui-card-footer {
    display: block;
    button {
      margin: 15px 0;
    }
  }
  .ball {
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: red;
    position: absolute;
    z-index: 99;
    top: 390px;
    left: 152px;
  }
}
</style>

